Calculating-machine.



PTHIG.

GALCULATING MACHINE.

APELIOA'MON FILED APR. 1, 1911 R. yPTHIG. GALCULATING MACHINE.

I APPLICATION FILED APR. 1, 1911. j 1,035,480, Patented .13.11.27, 1914 3 SHEETS-SHEET 2.

A ATToRNEys.

R.E PTHG.

GALGULATING Mmmm APPLICATION FILED APR. l, l9l1. 1,085,480, Fa'ented Jan. 27, l

3 SHEETS-SHEET 3.

e simens onirica.

i spannen of Leiters fame Patenteddun. 27,1914..

appnemon ma prix i, m1. seal x0. mgm.

vided with additional tens-shifting sleeves" at the rear-of. the-regular ncounters lfor cooperating withfthe parte of the. quotientcouiiters and ada. t t e calculating machine in' e comparative y simple land 'inexpensive manner forA the edsier use 'of the Sine multiplication, ydivision and other atithxeti# cal oplei-ations. p

It as been proposed heretofore fon cal'-A eulating machines other than tha'lfhqmas.

1 machine, toftransform thel quotient-counter which is compcsedof dials'independently? g each other, by,the additioiriof tens-shift devices into a' regular'- cou'ntr' which vnot only indicates4 the number ofrotations of thel crank at any desired point, but which -also indicates as the end-result of the different sinle operations thereal 'quotient even when .a `tion or subtraction Should have been al. ternately performed.4 This isespecially use- .ful when applied to the so-ca'lled simplified .o0 putat-ions. orthis p urposethe' invention consists of al'llhomas calculating machine'in ivhiclx'the` shafts o! the change-gear shiftin devices are extended rearwardl beyond! e product-counters and provi ed withadditional tens-shifting sleeves which coperate wi the diiferent parts of the.quotient..counters --which are located in the well-known manner s idewi'se of the product-counters. It'f is, 1

however, not new in Thomas'calculating ymachines with' two counters 'to extend thesha'fts of 'the shifting change-gears toward the Arear and provide vthem with tens-shifting sleeves for a second counter. But in this construction ofthe Ihomas calculating machine both counters serve solely for indicating the products while the improvements described in this application are c nned solely to Thomas-machines with quotient-counters.

The irnproved Vinacliine will be f'lly del cal'transvere vsection f the improved aeu- 'natel placed mesh W l' scribed hereinafterand `the* new features 'similar laters yof reference inf-uen@ cor-respondingparts, represents ii verti latin'gmachiiie, Fig. 2, planivi'ew in w ich the ruler and ad'ting topplllteireiomiti td, Fig.r3,i.hot "'-viw f e iuler,` Figs. 4 toS details, which be specially reparte, and 1f" 9 diii'` inma'tic p iiview of the caleuliagtiug'xiiacie, drawn ona reduced 'j e. v-

The 'ae'tuatig gear whelniechanism for ,the-produet-eoun ers consists 'in thaw-en. .kilitli tj ofiwio bevel-"erwheels i and@ Wlx'ichtrelocted attc ofV a eomhb'n loijx'gitudinallyshitable sleeve and df'a bevel-wheel 3 whicli'is supported on] theitopfpate and ada ted .tothe ait/erci. beidem- `lwhee s land 2. E '1 liish'ifting of the bevelgenwhe'eis 1 .nice eomplisned frein a longitudinal shait 4, 'which is supported in ne apri htwans aj-me machine: me, by means narm.,whioh rmlv mounted on the djcnnected at their up er ends withhoigsfinjalongitiidinally hifta le hfn'izontal'rail 6 which is connected with all the sleeves of the bevel-gearwlreels 1 andj2. he tens-,s iftin'g is' produced by the well-mmmI nga 7 which et the com 'Ietio ofone fnll'rotatio o f the shaft of't dial 8 is pressed sdewis by a finger 9 so as to produoeithe shifting ofthe sleeve -10 with the shifting-nger 11 and place thel Thespecial 4irnprcfivement on the Thomas- .-machine consists in extending all the axles l 14 of the shiftindevices in rearward direction and supper :and 17 and the-intermediate wall 16. At the rear-end of each 'shaft 14 isarranged a them in t-hp outerl Walls 15 shiftable sleeve 19 which .is capable of longitudinal motion on the shaft but splined thereto so as to prevent any axially-shifting .motion 'l`he-sleeve'19 carries. n shifting finger 20 and isv embraced by the forked end of a lever 2*'1 which is actuated by the shift- ,the product-counting device. The sleeve 29 mesh with a bevel-gearwheel 35 which is 10,/

` to the rear-wall 17. To

' placed on of the shifting-lever 22 ,cated on the outside of .the rear-wall 17,

'tens-shifting :device 'has been operatedQ/the -by bringing a `wedgelshaped cam locafted Aalways be placed into inglever 22, said lever being 'fulcrumed tothe rear-wall 17, as shown in. Fig. 7, the upper end of which, at the completion of every fn ll rotation of the vertical shaft of the dial 23 of the quotient-counter, is oscillated by a linger 24 which is mounted on the shaft for actuating the upper end of the shiftinglever 22. By this actuation of the shifting lever 22 the. linger 20 located on the sleeveI 19 is shifted with said sleeve so that the finger is 'placed in line with a gear-wheel 25 which is located on the shaft A26 of the quotient-counter. l In this position the sleeve 19 is rigidly held by a flat spring 27, winch, as shownin Fig. 7, presses on the pointed lower endof the forked lever 21 at one or the other side of the same. t The spring 27 is attached to a horizontal rail 28 which is losaid spring extending through an opening inthe wall 17, inwardly toward 'the forked lever 21.- On the shaft 26 is' located a sleeve 29 provided with two bevel-gearwheels 30 and 31, which are exactly of the same size as the corresponding bevel-gearwhels of is operated from a longitudinal shaft 32 by meansof intermediate arms 33. which latter engage' a longitudinal .rail 34 thatiis placed in connection with all the sleeves 29 and the quotient-counting device. The bevelgearl wheels 30 and 31 are alternately placed in,

catd on the shaft ofthe dial 23. After the sleeve 19 is returned into-a position' of rest at thev end of the saine alongside of the forked lever 21 into contact with an angular arm 37, the lower end ofywhichis attached prevent any overturning of the shaft 26, a star-wheel 38 1o cated on the same is placed by its concave portions in contact with the hub of the sleeve 19until a concave "portion 39 'on the sleeve permits, after the shifting of the same, ,the passing of the pointsof the star-wheel and thereby the axial rotation'of the shaft 26.

Fromthe foregoing it can -b e readily seen that the tenth-shifting, in one or the opposite sense, can be obtained in the uotientg. count-in device. The sleeve 19 on t e shaft 1.4 ofthe first-shifting device, as shown in Fig. 5, is non-shiftable and so arranged on the ,shaft that its shifting-finger .20 can engagement with the gearwheel 25, inasmuchas by the shaft 'of the shifting-device all the turns of the crank are transmitted' to the quotient-counting'device by a corresponding shifting of the ruler of the calculating machine in the well-known manner. Special stress, however, has to be,

' the formation of the upper end .which -is provided anda beveled end 41,

with an indentation 40 backwardly until the tion which is located between them and along which the finger 24 has to glide when the tens-shifting device is called into action. The finger 24 glides along the inclined portion of the indentation'40 and along the beveled end 41, of which the former is used for enffaging the finger for addition and the other or engaging the finger for subtraction, said linger pressin thereby the lever 22 nger arrives on the guide-portion between the indentation 40 and end 41.

By providing the quotient-counting device with a tens-shifting device, it is neces sary to place the quotient-'counter to the rear of the product-counting device. This requires that the peep-holes for the productcounters l12-of'the quotient-counti ng device have to be located to the rear and intermediately of the peep-holes of the productcounting device, as shown in Figs. 1 and 9. l The shifting motion which has to be i1nparted -to the rails 6 and 34 for the purpose of placing the change -gearwheels into proper position, two hand-levers 50 and 51 are-'arranged at one side of the machine, which are lconnected -at'their ends by rods `5w andfwitltcranks 54 and 55,`so that for each quotient-counter aspecial hand-lever andjlcver for the product-counter, while on the other hand a coupling device between the two is provided in such a manner that vboth -handflevers are jointly adjustable.

A special hand-lever forthe shifting of fthe quotient-counter permits the possibility oa special control by the quotient-counter as. regards the computations made by the machine. For instance, when for` making subtractions, the hand-lever 51 is pklaced on subtraction and theproductc0unter set for a4 given number, thenthe hand-lever 50 of the quotient-counter cah'remain on addition so that the correct number f rotations o' the crank appearsn the quotient-counter whereby it is possible to determine immediately how' many different items were deducted from the starting number foriwhich the product-counter has been set. When, however, the hand-lever 50 has been shifted .to subtraction then the quotient-counter would respond to subtraction .and a` number would therefore appear which would not give directly the numbers ofthe different subtracted items but would require a suppleinentary calculation. Furthermo e, the special adjustability of the change-g ars of t-he quotient-counter is imp'ortant for division. It is true that it is possible to carrv out division by when both hand-levers are jointly shifted. But when-'for instance ythe number 144 is to be divided by 12, it can be accomplished in yis provided which canbe separated from t-he means of multiplicatioh suoli a manner that` the adjustin plate is set for the number 12, after whi'o as many rotations of the crank are made until on the roduct-counter the -numbe1144 appears. ,ut when this computation is desired to be made'in the ordinary way, Ibyx which the number y144 is set on the'produot-oounter from the start, and the adjusting plate for Vthe number 12, then it is necessary to set the level' 51 of the product-counter to subtraction while thehand-lever `of the quotient-counter remains on addition. Only in this manner the quotientfcounter will indicate that for this mode of carrying out division twelve crankrotations have to be made. lVhen the hand-lever of the quotient-counter would be placed likewise on subtraction, then the quotient-counter would be operated for subtratioh and this would p require a supplementary computation' for obtaining the proper result.

l claim:

In a Thomas calculating niachinehaving an extension of the shaft of the change-gear, the combination, with the product-counter and a quotient-counter arranged to the rear vof the product-counter, of a tens-shifting 

